Honolulu, Hawaii (CNN) – It was an energy audit at work that first nudged Susan Chandler to think green.

"The first thing I did was change all my light bulbs" to energy-efficient models, Chandler said during a recent visit to her Honolulu home. "Then I started tracking my energy bill."

She began walking into rooms her husband and son had just left to turn off the lights. A significant cutback in the use of the clothes dryer was another step. Still, Chandler said she wanted to do more.